Transform JSON information into views that are strongly typed

I'm trying to convert JSON data into a model by serializing it with a class. However, I encounter an error when attempting to deserialize the data.

Here is my JSON data:

[{"Name":"Group1","Fields":[{"Field":"EmployeeSCP.Salary","Operator":"lt","Value":"50000","$$hashKey":"object:485"}],"Condition":"0"},
{"Name":"Group2","Fields":[{"Field":"EmployeeSCP.Salary","Operator":"gt","Value":"20000","$$hashKey":"object:495"}],"Condition":"0"},
{"groupCondition":"0"}]

Model:

public class ValidationModelData
{
    public string Name { get; set; }
    public List<FieldsData> Fields { get; set; }
    public string Condition { get; set; }
    public string groupCondition { get; set; }
}

public class FieldsData
{
    public string Field { get; set; }
    public string Operator { get; set; }
    public string Value { get; set; }
}

However, I am encountering an error during deserialization:

ValidationModelData validations = JsonConvert.DeserializeObject<ValidationModelData>(validation.JsonMetaData);

Answer №1

When it comes to converting a JSON array into a C# object, the best approach is to utilize either an array or a list. Personally, I lean towards using a List instead of an array due to the fact that resizing arrays can be quite costly when adding or removing ValidationModelData.

List<ValidationModelData> validations = JsonConvert.DeserializeObject<List<ValidationModelData>>(validation.JsonMetaData);

Answer №2

I had a feeling that you may have missed the fact that it's actually an array. You can choose to store them in either an array or a List as shown below:

ValidationModelData[] validations = JsonConvert.DeserializeObject<ValidationModelData[]>(validation.JsonMetaData);

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